ilastik is a simple, user-friendly tool for interactive image classification, segmentation and analysis. It is built as a modular software framework, which currently has workflows for automated (supervised) pixel- and object-level classification, automated and semi-automated object tracking, semi-automated segmentation and object counting without detection. Most analysis operations are performed lazily, which enables targeted interactive processing of data subvolumes, followed by complete volume analysis in offline batch mode. Using it requires no experience in image processing.

Install ilastik

Ready-made packages are available for Linux, Mac, and Windows.

Read documentation

ilastik comes with an extensive user manual.


View developer documentation and API docs. Report bugs and request features.

Release 1.3.2 is available!

We are happy to announce a new ilastik release. Detailed release notes can be found here, in short, it's much better, go ahead and try! We have new colors, 2D features for 3D data, training data is no longer required in batch processing, and much more.

New video tutorial

We started doing video tutorials again: Pixel Classification. If you like it, get back to us and we'll do one on your favorite topic!

Get in touch

Discuss with other users at or contact the friendly ilastik team directly.